CBSE Class 7 Answered
What is the composition of the crust and what is its thickness?
Asked by Topperlearning User | 23 Mar, 2016, 10:43: AM
Expert Answer
Composition:
The mineral constituents of the continental mass are silica and alumina-called sial.
The oceanic crust mainly consists of Silica and magnesium called sima. The continental crust is about 35 km thick and oceanic crust is about 5 km thick.
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